package ch7.ex2;

import java.util.*;

public class RandomShapeGenerator {
	private Random rand	= new Random(47);
	
	public Shape next(){
		switch(rand.nextInt(4)){
		default:
		case 0: return new Circle();
		case 1: return new Square();
		case 2: return new Triangle();
		case 3: return new Tetrahedron();
		}
	}
}
